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5131 | clevermous | 1 | /* |
2 | SDL - Simple DirectMedia Layer |
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3 | Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga |
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4 | |||
5 | This library is free software; you can redistribute it and/or |
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6 | modify it under the terms of the GNU Library General Public |
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7 | License as published by the Free Software Foundation; either |
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8 | version 2 of the License, or (at your option) any later version. |
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9 | |||
10 | This library is distributed in the hope that it will be useful, |
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11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 | Library General Public License for more details. |
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14 | |||
15 | You should have received a copy of the GNU Library General Public |
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16 | License along with this library; if not, write to the Free |
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17 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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18 | |||
19 | Sam Lantinga |
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20 | slouken@devolution.com |
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21 | */ |
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22 | |||
23 | #ifdef SAVE_RCSID |
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24 | static char rcsid = |
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25 | "@(#) $Id: SDL_sysjoystick.h,v 1.2 2001/04/26 16:50:17 hercules Exp $"; |
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26 | #endif |
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27 | |||
28 | /* This is the system specific header for the SDL joystick API */ |
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29 | |||
30 | #include "SDL_joystick.h" |
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31 | |||
32 | /* The SDL joystick structure */ |
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33 | struct _SDL_Joystick { |
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34 | Uint8 index; /* Device index */ |
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35 | const char *name; /* Joystick name - system dependent */ |
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36 | |||
37 | int naxes; /* Number of axis controls on the joystick */ |
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38 | Sint16 *axes; /* Current axis states */ |
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39 | |||
40 | int nhats; /* Number of hats on the joystick */ |
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41 | Uint8 *hats; /* Current hat states */ |
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42 | |||
43 | int nballs; /* Number of trackballs on the joystick */ |
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44 | struct balldelta { |
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45 | int dx; |
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46 | int dy; |
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47 | } *balls; /* Current ball motion deltas */ |
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48 | |||
49 | int nbuttons; /* Number of buttons on the joystick */ |
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50 | Uint8 *buttons; /* Current button states */ |
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51 | |||
52 | struct joystick_hwdata *hwdata; /* Driver dependent information */ |
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53 | |||
54 | int ref_count; /* Reference count for multiple opens */ |
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55 | }; |
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56 | |||
57 | /* Function to scan the system for joysticks. |
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58 | * Joystick 0 should be the system default joystick. |
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59 | * This function should return the number of available joysticks, or -1 |
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60 | * on an unrecoverable fatal error. |
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61 | */ |
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62 | extern int SDL_SYS_JoystickInit(void); |
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63 | |||
64 | /* Function to get the device-dependent name of a joystick */ |
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65 | extern const char *SDL_SYS_JoystickName(int index); |
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66 | |||
67 | /* Function to open a joystick for use. |
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68 | The joystick to open is specified by the index field of the joystick. |
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69 | This should fill the nbuttons and naxes fields of the joystick structure. |
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70 | It returns 0, or -1 if there is an error. |
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71 | */ |
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72 | extern int SDL_SYS_JoystickOpen(SDL_Joystick *joystick); |
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73 | |||
74 | /* Function to update the state of a joystick - called as a device poll. |
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75 | * This function shouldn't update the joystick structure directly, |
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76 | * but instead should call SDL_PrivateJoystick*() to deliver events |
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77 | * and update joystick device state. |
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78 | */ |
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79 | extern void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick); |
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80 | |||
81 | /* Function to close a joystick after use */ |
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82 | extern void SDL_SYS_JoystickClose(SDL_Joystick *joystick); |
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83 | |||
84 | /* Function to perform any system-specific joystick related cleanup */ |
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85 | extern void SDL_SYS_JoystickQuit(void); |
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86 |